I just bought a boost gauge from the local subie dealer for my 02 wrx. They were out of the one for the wrx but said the sti gauge would still work. Then I noticed that the gauge for the wrx has a different part number than the one for the sti. Now I'm sorta nervous that they're different somehow and I dont want to get in the middle of the job and find out that it wont work with my car. Is the hose that you have to connect the three way joint to a different size on the sti than on the wrx and is the turbo gauge for the sti really different or will it work with my car? Any help would be very greatly appreciated.